2012-10-09T07:33:39Z2012-10-09T07:33:39Zhttp://cab.unime.it/mus/id/eprint/1106This item is in the repository with the URL: http://cab.unime.it/mus/id/eprint/11062012-10-09T07:33:39ZSur les surfaces a torsion nulle et a courbure nulle de $E_4$B. Rouxel